The median/average age of the population of Glenning Valley is 36 years of age.

84.9% of people living in the suburb of Glenning Valley were born in Australia. The other top responses for country of birth were 3.9% England, 1.3% New Zealand, 0.6% Scotland, 0.6% Philippines, 0.4% Japan, 0.4% Wales, 0.4% South Africa, 0.3% Lebanon, 0.3% Netherlands, 0.2% Peru, 0.2% Israel, 0.2% France, 0.2% China , 0.2% Canada.

93.7% of people living in Glenning Valley speak English only. The other top languages spoken are 2.6% Language spoken at home not stated, 0.4% Japanese, 0.4% Greek, 0.4% Other, 0.4% Dutch, 0.3% Hungarian, 0.3% French, 0.3% Spanish, 0.3% Italian.

56.0% of people are married, 30.2% have never married and 7.1% are divorced and 2.3% are separated. There are 69 widowed people living in Glenning Valley.

56.3% of the people living in Glenning Valley over the age of 15 and who identify as being in the labour force are employed full time, 33.6% are working on a part time basis. Glenning Valley has an unemployment rate of 5.0%.